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Nelson Firestop Sealant (LBS3™) is ideally suited for for firestopping through-penetrationsof non-combustible pipe, insulated pipe and combustible pipe (such as PVC, PEX, CPVC and ABS) in floors or walls. It can applied using a standard caulk gun, bulk loader, or trowel. If you are working with a large area, it can be pumped directly from the pail.

To apply, begin on the edge of the opening and ensure that the sealant makes complete contact with the inside surface of the opening, as well as the surface of the penetrating item(s).

No-sag (thixotropic), halogen-free formula won’t drip even when applied overhead, and is safe to work with

Because it is water based, it is easy to clean and there are no special handling or disposal requirements

Endothermic quality allows the sealant to absorb heat and release chemically-bound water

Able to withstand extremely cold temperatures and thaw without expanding or contracting

Acoustically tested to reduce noise transmission

One year manufacturer warranty

Applications
Use to seal construction openings, blank openings and penetrating items against the passage of flame, noxious gas, smoke and water. Restores fire rated construction to its original integrity.